Rigging Sphere with Hair to a cylinder with bones
Ok, i figured it out..
You need to follow the instructions on this video starting at 20 seconds in: https://www.youtube.com/watch?v=o5f18T7Rjmc
Basically you need to in object mode select the sphere with hair, then select the armature. Go to Post mode and select the bone you want the sphere hair to connect to. cntrl-p select bone.
done.